[K/JS] Fix autoboxing for inlined function ^KT-60785 Fixed

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/JsLoweringPhases.kt

@@ -15,7 +15,6 @@ import org.jetbrains.kotlin.backend.common.lower.inline.LocalClassesInInlineFunc
 import org.jetbrains.kotlin.backend.common.lower.inline.LocalClassesInInlineLambdasLowering
 import org.jetbrains.kotlin.backend.common.lower.loops.ForLoopsLowering
 import org.jetbrains.kotlin.backend.common.phaser.*
-import org.jetbrains.kotlin.config.CommonConfigurationKeys
 import org.jetbrains.kotlin.ir.backend.js.lower.*
 import org.jetbrains.kotlin.ir.backend.js.lower.calls.CallsLowering
 import org.jetbrains.kotlin.ir.backend.js.lower.cleanup.CleanupLowering
@@ -23,7 +22,6 @@ import org.jetbrains.kotlin.ir.backend.js.lower.coroutines.AddContinuationToFunc
 import org.jetbrains.kotlin.ir.backend.js.lower.coroutines.JsSuspendArityStoreLowering
 import org.jetbrains.kotlin.ir.backend.js.lower.coroutines.JsSuspendFunctionsLowering
 import org.jetbrains.kotlin.ir.backend.js.lower.inline.*
-import org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.JsGenerationGranularity
 import org.jetbrains.kotlin.ir.declarations.IrFile
 import org.jetbrains.kotlin.ir.declarations.IrModuleFragment
 import org.jetbrains.kotlin.ir.interpreter.IrInterpreterConfiguration
@@ -738,7 +736,7 @@ private val inlineClassUsageLoweringPhase = makeBodyLoweringPhase(
 )
 
 private val autoboxingTransformerPhase = makeBodyLoweringPhase(
-    ::AutoboxingTransformer,
+    { AutoboxingTransformer(it, shouldCalculateActualTypeForInlinedFunction = true) },
     name = "AutoboxingTransformer",
     description = "Insert box/unbox intrinsics"
 )

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/AutoboxingTransformer.kt

@@ -31,7 +31,10 @@ import org.jetbrains.kotlin.ir.util.render
 
 // Copied and adapted from Kotlin/Native
 
-abstract class AbstractValueUsageLowering(val context: JsCommonBackendContext) : AbstractValueUsageTransformer(context.irBuiltIns),
+abstract class AbstractValueUsageLowering(
+    val context: JsCommonBackendContext,
+    private val shouldCalculateActualTypeForInlinedFunction: Boolean = false
+) : AbstractValueUsageTransformer(context.irBuiltIns),
     BodyLoweringPass {
 
     val icUtils = context.inlineClassesUtils
@@ -52,11 +55,19 @@ abstract class AbstractValueUsageLowering(val context: JsCommonBackendContext) :
 
     abstract fun IrExpression.useExpressionAsType(actualType: IrType, expectedType: IrType): IrExpression
 
-    protected fun IrExpression.getActualType() = when (this) {
+    protected fun IrExpression.getActualType(): IrType = when (this) {
         is IrConstructorCall -> symbol.owner.returnType
         is IrCall -> symbol.owner.realOverrideTarget.returnType
         is IrGetField -> this.symbol.owner.type
 
+        is IrInlinedFunctionBlock -> {
+            if (shouldCalculateActualTypeForInlinedFunction) {
+                inlineCall.getActualType()
+            } else {
+                this.type
+            }
+        }
+
         is IrTypeOperatorCall -> {
             if (operator == IrTypeOperator.REINTERPRET_CAST) {
                 this.typeOperand
@@ -120,7 +131,10 @@ abstract class AbstractValueUsageLowering(val context: JsCommonBackendContext) :
         )
 }
 
-class AutoboxingTransformer(context: JsCommonBackendContext) : AbstractValueUsageLowering(context) {
+class AutoboxingTransformer(
+    context: JsCommonBackendContext,
+    shouldCalculateActualTypeForInlinedFunction: Boolean = false
+) : AbstractValueUsageLowering(context, shouldCalculateActualTypeForInlinedFunction) {
     private var processingReturnStack = mutableListOf<IrReturn>()
 
     private fun IrExpression.useReturnableExpressionAsType(expectedType: IrType): IrExpression {